Dolmar PB-251.4 - Manual (Page 15)

2. Cleaning of air cleaner
WARNING ： INFLAMMABLES STRICTLY PROHIBITED
Interval of Cleaning and Inspection: Daily (every 10 operating hours)
(1) Remove the air cleaner cover-fixing bolts.
(2) Pull the cover lower side and detach the air cleaner cover.
(3) Turn the choke lever to the full close side, and keep the carburetor off
from dust or dirt.
(4) If oil adheres to the element (sponge), squeeze it firmly.
(5) For heavy contamination:
1) Remove the element (sponge), immerse it in warm water or in
water-diluted neutral detergent, and dry it completely.
2) Clean the element (felt) with gasoline, and dry it completely.
(6) Before attaching the element, be sure to dry it completely. Insufficient
drying of the element may lead to difficult startup.
(7) Wipe out with waste cloth, oil adhering around the air cleaner cover
and plate breather.
(8) Immediately after cleaning is finished, attach the air cleaner cover and
tighten it with fixing bolts. (In remounting, first place the upper claw,
and then the lower claw.)
3. Checking the spark plug
(1) Opening/closing the plug cover
When opening the cover, apply fingers to the main handle and
plug cover projection as shown in the figure right. Push up the
projection and slide the cover in the “OPEN” direction.
When closing the cover, slide the cover in the “CLOSE” direction
till the click under the plug cover projection rides over the engine
cover. Finally, push in the projection.
(2) Removing the spark plug
Use an attached box wrench to remove or install the spark plug.
(3) Checking the spark plug
The clearance between two electrodes of spark plug (see the
figure left) is 0.7 to 0.8 mm. Adjust to the correct clearance when
it is too wide or too narrow.
Clean thoroughly or replace the spark plug if it has accumulated
carbon or contaminated.
(4) Replacing the spark plug
For replacement, use NGK-CMR6A.
DANGER
• Clean the element several times a day, if excessive dust adheres to it.
• If operation continues with the element remaining not cleared of oil, oil in the air cleaner may fall outside, resulting in oil contamination.
Pick this part and remove the
element (felt).
Element (felt)
Element
(sponge)
Air cleaner
cover
Fixing bolt
Breather Part
Plate
(3)
(1)
(2)
Lateral electrode (-)
Electrode clearance
0.7 - 0.8 mm
(0.028-0.031 in)
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